diff options
author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-02-25 23:17:25 +0000 |
---|---|---|
committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-02-25 23:17:25 +0000 |
commit | 42c3c0cceddee64c22024e3e92ed636e75ea9c77 (patch) | |
tree | 31c9c33071848148c54304e5966298dc22a9eb59 /target-i386/translate-copy.c | |
parent | 9588b95a0849cb4c9e344b3791a76af7df0aaf80 (diff) | |
download | hqemu-42c3c0cceddee64c22024e3e92ed636e75ea9c77.zip hqemu-42c3c0cceddee64c22024e3e92ed636e75ea9c77.tar.gz |
native FPU support (disabled)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@641 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-i386/translate-copy.c')
-rw-r--r-- | target-i386/translate-copy.c | 324 |
1 files changed, 47 insertions, 277 deletions
diff --git a/target-i386/translate-copy.c b/target-i386/translate-copy.c index 340864a..08775e6 100644 --- a/target-i386/translate-copy.c +++ b/target-i386/translate-copy.c @@ -31,6 +31,8 @@ #include "exec-all.h" #include "disas.h" +#ifdef USE_CODE_COPY + extern char exec_loop; /* operand size */ @@ -67,6 +69,7 @@ typedef struct DisasContext { int vm86; /* vm86 mode */ int cpl; int iopl; + int flags; struct TranslationBlock *tb; } DisasContext; @@ -274,7 +277,7 @@ static int disas_insn(DisasContext *s) uint8_t *pc_start, *pc_tmp, *pc_start_insn; int b, prefixes, aflag, dflag, next_eip, val; int ot; - int modrm, mod, op; + int modrm, mod, op, rm; pc_start = s->pc; prefixes = 0; @@ -644,48 +647,37 @@ static int disas_insn(DisasContext *s) op = R_GS; do_lxx: goto unsupported_op; -#if 0 /************************/ /* floats */ case 0xd8 ... 0xdf: +#if 1 + /* currently not stable enough */ + goto unsupported_op; +#else + if (s->flags & (HF_EM_MASK | HF_TS_MASK)) + goto unsupported_op; +#endif +#if 0 + /* for testing FPU context switch */ + { + static int count; + count = (count + 1) % 3; + if (count != 0) + goto unsupported_op; + } +#endif modrm = ldub_code(s->pc++); mod = (modrm >> 6) & 3; rm = modrm & 7; op = ((b & 7) << 3) | ((modrm >> 3) & 7); if (mod != 3) { /* memory op */ - gen_lea_modrm(s, modrm, ®_addr, &offset_addr); + parse_modrm(s, modrm); switch(op) { case 0x00 ... 0x07: /* fxxxs */ case 0x10 ... 0x17: /* fixxxl */ case 0x20 ... 0x27: /* fxxxl */ case 0x30 ... 0x37: /* fixxx */ - { - int op1; - op1 = op & 7; - - switch(op >> 4) { - case 0: - gen_op_flds_FT0_A0(); - break; - case 1: - gen_op_fildl_FT0_A0(); - break; - case 2: - gen_op_fldl_FT0_A0(); - break; - case 3: - default: - gen_op_fild_FT0_A0(); - break; - } - - gen_op_fp_arith_ST0_FT0[op1](); - if (op1 == 3) { - /* fcomp needs pop */ - gen_op_fpop(); - } - } break; case 0x08: /* flds */ case 0x0a: /* fsts */ @@ -699,102 +691,28 @@ static int disas_insn(DisasContext *s) case 0x38: /* filds */ case 0x3a: /* fists */ case 0x3b: /* fistps */ - - switch(op & 7) { - case 0: - switch(op >> 4) { - case 0: - gen_op_flds_ST0_A0(); - break; - case 1: - gen_op_fildl_ST0_A0(); - break; - case 2: - gen_op_fldl_ST0_A0(); - break; - case 3: - default: - gen_op_fild_ST0_A0(); - break; - } - break; - default: - switch(op >> 4) { - case 0: - gen_op_fsts_ST0_A0(); - break; - case 1: - gen_op_fistl_ST0_A0(); - break; - case 2: - gen_op_fstl_ST0_A0(); - break; - case 3: - default: - gen_op_fist_ST0_A0(); - break; - } - if ((op & 7) == 3) - gen_op_fpop(); - break; - } - break; case 0x0c: /* fldenv mem */ - gen_op_fldenv_A0(s->dflag); - break; case 0x0d: /* fldcw mem */ - gen_op_fldcw_A0(); - break; case 0x0e: /* fnstenv mem */ - gen_op_fnstenv_A0(s->dflag); - break; case 0x0f: /* fnstcw mem */ - gen_op_fnstcw_A0(); - break; case 0x1d: /* fldt mem */ - gen_op_fldt_ST0_A0(); - break; case 0x1f: /* fstpt mem */ - gen_op_fstt_ST0_A0(); - gen_op_fpop(); - break; case 0x2c: /* frstor mem */ - gen_op_frstor_A0(s->dflag); - break; case 0x2e: /* fnsave mem */ - gen_op_fnsave_A0(s->dflag); - break; case 0x2f: /* fnstsw mem */ - gen_op_fnstsw_A0(); - break; case 0x3c: /* fbld */ - gen_op_fbld_ST0_A0(); - break; case 0x3e: /* fbstp */ - gen_op_fbst_ST0_A0(); - gen_op_fpop(); - break; case 0x3d: /* fildll */ - gen_op_fildll_ST0_A0(); - break; case 0x3f: /* fistpll */ - gen_op_fistll_ST0_A0(); - gen_op_fpop(); break; default: goto illegal_op; } } else { /* register float ops */ - opreg = rm; - switch(op) { case 0x08: /* fld sti */ - gen_op_fpush(); - gen_op_fmov_ST0_STN((opreg + 1) & 7); - break; case 0x09: /* fxchg sti */ - gen_op_fxchg_ST0_STN(opreg); break; case 0x0a: /* grp d9/2 */ switch(rm) { @@ -807,149 +725,43 @@ static int disas_insn(DisasContext *s) case 0x0c: /* grp d9/4 */ switch(rm) { case 0: /* fchs */ - gen_op_fchs_ST0(); - break; case 1: /* fabs */ - gen_op_fabs_ST0(); - break; case 4: /* ftst */ - gen_op_fldz_FT0(); - gen_op_fcom_ST0_FT0(); - break; case 5: /* fxam */ - gen_op_fxam_ST0(); break; default: goto illegal_op; } break; case 0x0d: /* grp d9/5 */ - { - switch(rm) { - case 0: - gen_op_fpush(); - gen_op_fld1_ST0(); - break; - case 1: - gen_op_fpush(); - gen_op_fldl2t_ST0(); - break; - case 2: - gen_op_fpush(); - gen_op_fldl2e_ST0(); - break; - case 3: - gen_op_fpush(); - gen_op_fldpi_ST0(); - break; - case 4: - gen_op_fpush(); - gen_op_fldlg2_ST0(); - break; - case 5: - gen_op_fpush(); - gen_op_fldln2_ST0(); - break; - case 6: - gen_op_fpush(); - gen_op_fldz_ST0(); - break; - default: - goto illegal_op; - } - } - break; - case 0x0e: /* grp d9/6 */ switch(rm) { - case 0: /* f2xm1 */ - gen_op_f2xm1(); - break; - case 1: /* fyl2x */ - gen_op_fyl2x(); - break; - case 2: /* fptan */ - gen_op_fptan(); - break; - case 3: /* fpatan */ - gen_op_fpatan(); - break; - case 4: /* fxtract */ - gen_op_fxtract(); - break; - case 5: /* fprem1 */ - gen_op_fprem1(); - break; - case 6: /* fdecstp */ - gen_op_fdecstp(); + case 0: + case 1: + case 2: + case 3: + case 4: + case 5: + case 6: break; default: - case 7: /* fincstp */ - gen_op_fincstp(); - break; + goto illegal_op; } break; + case 0x0e: /* grp d9/6 */ + break; case 0x0f: /* grp d9/7 */ - switch(rm) { - case 0: /* fprem */ - gen_op_fprem(); - break; - case 1: /* fyl2xp1 */ - gen_op_fyl2xp1(); - break; - case 2: /* fsqrt */ - gen_op_fsqrt(); - break; - case 3: /* fsincos */ - gen_op_fsincos(); - break; - case 5: /* fscale */ - gen_op_fscale(); - break; - case 4: /* frndint */ - gen_op_frndint(); - break; - case 6: /* fsin */ - gen_op_fsin(); - break; - default: - case 7: /* fcos */ - gen_op_fcos(); - break; - } break; case 0x00: case 0x01: case 0x04 ... 0x07: /* fxxx st, sti */ case 0x20: case 0x21: case 0x24 ... 0x27: /* fxxx sti, st */ case 0x30: case 0x31: case 0x34 ... 0x37: /* fxxxp sti, st */ - { - int op1; - - op1 = op & 7; - if (op >= 0x20) { - gen_op_fp_arith_STN_ST0[op1](opreg); - if (op >= 0x30) - gen_op_fpop(); - } else { - gen_op_fmov_FT0_STN(opreg); - gen_op_fp_arith_ST0_FT0[op1](); - } - } break; case 0x02: /* fcom */ - gen_op_fmov_FT0_STN(opreg); - gen_op_fcom_ST0_FT0(); break; case 0x03: /* fcomp */ - gen_op_fmov_FT0_STN(opreg); - gen_op_fcom_ST0_FT0(); - gen_op_fpop(); break; case 0x15: /* da/5 */ switch(rm) { case 1: /* fucompp */ - gen_op_fmov_FT0_STN(1); - gen_op_fucom_ST0_FT0(); - gen_op_fpop(); - gen_op_fpop(); break; default: goto illegal_op; @@ -958,15 +770,10 @@ static int disas_insn(DisasContext *s) case 0x1c: switch(rm) { case 0: /* feni (287 only, just do nop here) */ - break; case 1: /* fdisi (287 only, just do nop here) */ - break; + goto unsupported_op; case 2: /* fclex */ - gen_op_fclex(); - break; case 3: /* fninit */ - gen_op_fninit(); - break; case 4: /* fsetpm (287 only, just do nop here) */ break; default: @@ -974,42 +781,20 @@ static int disas_insn(DisasContext *s) } break; case 0x1d: /* fucomi */ - if (s->cc_op != CC_OP_DYNAMIC) - gen_op_set_cc_op(s->cc_op); - gen_op_fmov_FT0_STN(opreg); - gen_op_fucomi_ST0_FT0(); - s->cc_op = CC_OP_EFLAGS; break; case 0x1e: /* fcomi */ - if (s->cc_op != CC_OP_DYNAMIC) - gen_op_set_cc_op(s->cc_op); - gen_op_fmov_FT0_STN(opreg); - gen_op_fcomi_ST0_FT0(); - s->cc_op = CC_OP_EFLAGS; break; case 0x2a: /* fst sti */ - gen_op_fmov_STN_ST0(opreg); break; case 0x2b: /* fstp sti */ - gen_op_fmov_STN_ST0(opreg); - gen_op_fpop(); break; case 0x2c: /* fucom st(i) */ - gen_op_fmov_FT0_STN(opreg); - gen_op_fucom_ST0_FT0(); break; case 0x2d: /* fucomp st(i) */ - gen_op_fmov_FT0_STN(opreg); - gen_op_fucom_ST0_FT0(); - gen_op_fpop(); break; case 0x33: /* de/3 */ switch(rm) { case 1: /* fcompp */ - gen_op_fmov_FT0_STN(1); - gen_op_fcom_ST0_FT0(); - gen_op_fpop(); - gen_op_fpop(); break; default: goto illegal_op; @@ -1018,49 +803,25 @@ static int disas_insn(DisasContext *s) case 0x3c: /* df/4 */ switch(rm) { case 0: - gen_op_fnstsw_EAX(); break; default: goto illegal_op; } break; case 0x3d: /* fucomip */ - if (s->cc_op != CC_OP_DYNAMIC) - gen_op_set_cc_op(s->cc_op); - gen_op_fmov_FT0_STN(opreg); - gen_op_fucomi_ST0_FT0(); - gen_op_fpop(); - s->cc_op = CC_OP_EFLAGS; break; case 0x3e: /* fcomip */ - if (s->cc_op != CC_OP_DYNAMIC) - gen_op_set_cc_op(s->cc_op); - gen_op_fmov_FT0_STN(opreg); - gen_op_fcomi_ST0_FT0(); - gen_op_fpop(); - s->cc_op = CC_OP_EFLAGS; break; case 0x10 ... 0x13: /* fcmovxx */ case 0x18 ... 0x1b: - { - int op1; - const static uint8_t fcmov_cc[8] = { - (JCC_B << 1), - (JCC_Z << 1), - (JCC_BE << 1), - (JCC_P << 1), - }; - op1 = fcmov_cc[op & 3] | ((op >> 3) & 1); - gen_setcc(s, op1); - gen_op_fcmov_ST0_STN_T0(opreg); - } break; default: goto illegal_op; } } + s->tb->cflags |= CF_TB_FP_USED; break; -#endif + /**************************/ /* mov */ case 0xc6: @@ -1303,6 +1064,10 @@ static int disas_insn(DisasContext *s) case 0x90: /* nop */ break; case 0x9b: /* fwait */ + if ((s->flags & (HF_MP_MASK | HF_TS_MASK)) == + (HF_MP_MASK | HF_TS_MASK)) { + goto unsupported_op; + } break; case 0xcc: /* int3 */ goto unsupported_op; @@ -1436,7 +1201,8 @@ static inline int gen_intermediate_code_internal(CPUState *env, dc->cpl = (flags >> HF_CPL_SHIFT) & 3; dc->iopl = (flags >> IOPL_SHIFT) & 3; dc->tb = tb; - + dc->flags = flags; + dc->is_jmp = 0; for(;;) { @@ -1473,7 +1239,9 @@ static inline int gen_intermediate_code_internal(CPUState *env, #ifdef DEBUG_DISAS if (loglevel) { fprintf(logfile, "----------------\n"); - fprintf(logfile, "IN: COPY: %s\n", lookup_symbol(pc_start)); + fprintf(logfile, "IN: COPY: %s fpu=%d\n", + lookup_symbol(pc_start), + tb->cflags & CF_TB_FP_USED ? 1 : 0); disas(logfile, pc_start, dc->pc - pc_start, 0, !dc->code32); fprintf(logfile, "\n"); } @@ -1482,7 +1250,7 @@ static inline int gen_intermediate_code_internal(CPUState *env, if (!search_pc) { *gen_code_size_ptr = dc->gen_code_ptr - dc->gen_code_start; tb->size = dc->pc - pc_start; - tb->cflags = CF_CODE_COPY; + tb->cflags |= CF_CODE_COPY; return 0; } else { return -1; @@ -1526,7 +1294,7 @@ int cpu_restore_state_copy(TranslationBlock *tb, if (ret < 0) return ret; /* restore all the CPU state from the CPU context from the - signal */ + signal. The FPU context stays in the host CPU. */ env->regs[R_EAX] = uc->uc_mcontext.gregs[REG_EAX]; env->regs[R_ECX] = uc->uc_mcontext.gregs[REG_ECX]; @@ -1542,3 +1310,5 @@ int cpu_restore_state_copy(TranslationBlock *tb, env->cc_op = CC_OP_EFLAGS; return 0; } + +#endif /* USE_CODE_COPY */ |